Mechanism for connecting signatures in a signature-handling machine



Sept. 18, 1934- o. KLEINSCHMIT ET AL MECHANISM FOR CONNECTING SIGNATURES IN A SIGNATURE HANDLING MACHINE Filed Nov. 3, 1930 3 Sheets-Sheet 1 flffowM-V Sept. 18, 1934. o. KLEINSCHMIT Er AL 1,974,243

MECHANISM FOR CONNECTING SIGNATURES IN A SIGNATURE HANDLING MACHINE Filed Nov. 3, 1930 '3 Sheets-Sheet 2 Wafer ezfs 5167* p 1934- o. KLEINSCHMIT ET AL ,9 4,243

MECHANISM FOR CONNECTING SIGNATURES IN A SIGNATURE HANDLING MACHINE Filed Nov. 3, 1930 3 Sheets-Sheet 3' Patented Sept. 18, 1934 UNITED STATES PAT OFFIFE MECHANISM FOR CONNECTING SIGNA- TUBES IN A SIGNATURE-HANDLING ll/IA- CHINE many, a German firm Application November 3, 1930, Serial No. 493,154

In Germany July 9, 1930 31 Claims.

Thepresent invention relates to signature-handling machines and more particularly concerns the rotary-arm type of such machines.

It is customary in the production of better class books or the like to glue the first and last signatures of each book to the adjoining signatures at the fold. Hitherto, when operating the type of machine above referred to, the application of the adhesive to the requisite section has been efj fected manually by the operative. That is to say, the operative draws the fold of the section to be so treated through a conveniently situated adhesive supply bath or the like, by hand, before placing the signature upon a rotary arm of the machine, for its further conveyance and handling.

It is desirable, in some cases, to apply a backing strip of suitable material to the folds of the signatures being assembled and stitched. When a backing strip is used, it is positioned, by known means, across the folds of the assembled signatures and stitched therewith. The strip is then drawn down .in the form of a loop between each two successive books, also by known means comprising a manually operated batten or known looping mechanism, in order to lap the backing strip for attachment to the covers of the book. The intervals at which this constantly recurring manipulation, andalso the above described adhesive applying operation must be performed, vary with the number of sections constituting the books to'be assembled. Hitherto, the operation of the looping mechanism, when such is used, has been manually controlled and timed by the operative.

' The object of this invention is to provide means for mechanically performing the adhesive-applying operation and, if desired, to time, automatically, both the above described operations by means adjustable according to the number of signatures constituting the book or the like which is to be assembled for binding.

According to this invention, for attaching together the signatures of a book or the like in a rotary-arm signature-handling machine, adhesive is mechanically applied as required to a signature, adjacent the fold thereof, after laying the signature upon the requisite carrier arm but prior to assembling the said signature with the signatures previously assembled for stitching.

In machines of the rotary arm type each signature is carried by the conveying saddles from the laying on station to beneath the stitching needles in one or more stages of rotation. Provision must be made to retain the signatures upon their respective saddles during the rotary and vertical movements of the spider. This was formerly done, by hand, in known manner, by clamping the head of the signature against a stop provided with a gripping spring and so arranged that the signature held thereby could be easily withdrawn when the spider descended after depositing the signature with those previously stitched. In the present instance it is desirable that the manual operation for securing the signature upon the saddle should be replaced by automatic means for performing the operation, because the stitching of each signature is effected after two distinct stages of movement from the laying on station. That is to say, the application of adhesive to the signature is effected after the first stage of movement of the spider and the signature must be secured and straightened before this operation takes place and also when'it is deposited beneath the stitching needles.

One embodiment of the invention is shown in the accompanying drawings wherein mechanism is shown incorporated in a rotary-arm bookbind'ingmachine, to carry into effect the method above described.

Fig. 1 is a front elevation of a book-stitching machine of the thread sewing, rotary-arm type,

Fig. 2 is a plan View thereof,

Figs. 3, 4.- and 5 are details, drawn to a larger scale, of the timing and controlling means for the adhesive app-lying and looping operations, and

Figs. 6 and 7 are details of the backing-strip looping mechanism.

Referring to Figs. 1 and 2, in which a fourarm thread-sewing machine of known type is shown, the main frame 1 supports aspider mem#- her 111 which is constructed with four radial arms upon which are mounted signature conveying saddles 2, 3, 4 and 5. In the position shown in the drawings, a signature 3a, carried by the saddle 3, is in the position 0 immediately beneath the stitching needles (not shown) and about to be assembled with the previously fed and stitched signatures. The saddle 5 is at the laying on stationA and supporting a signature 5a which has been deposited thereon at this point of travel of the spider la. The saddle 2 is positioned at B intermediate the saddles 3 and 5 and carries a signature 2a which is about to receive a strip of adhesive by means of mechanism whichwill be hereinafter described, while the saddle 4 is shown in the idle'position. The progress of'a signature through the machine is as follows: After the, signature has been placed on one ofthe saddles at A and the sewing operation completed at C by means of which the preceding signature is attached to the assembled signatures already stitched, the spider 1a descends, rotates through 90 and re-ascends in known manner. The first mentioned signature is thus brought into the position B adjacent the adhesive supplying apparatus, which consists in this embodiment of an adhesive supply roller 13, adapted to rotate on a fixed axis (Fig. 1) and an oscillating adhesive applying roller 13'. The automatic signature-straighteningdevice (Figs. 1 and 2), consists of an intermittently or continuously revolving roller 7, which is mounted in a pivotal bracket 41. The saddle with the signature ascends between the members '1 and 13. The roller '7 is driven by a belt or other suitable means, and is oscillated together with the bracket 41 which rocks on the pivot 8 in accordance with the throw of a cam member mounted on the shaft 42. When the roller Z, which may be faced with rubber or other frictional material, is caused to press against the signature the latter is drawn; in the direction of rotation indicated by the arrow a against a stop, in the form of a spring clip 6, which holds the signature while it is straightened and during its transit to the stitching means. The roller 13 is mounted in arms 12 (Fig. 1) which latter are pivoted to the adhesive supply device and are connected to an operating pedal 10 by means of a connecting lever 11. When actuated through the foot pedal 10 or automatically from a cam-driven member 24 the small roller 13 carried by the arms 12 and bearing against the adhesive supply roller 13 is contacted with the signature in the vicinity of the fold and thus applies a strip of adhesive thereto.

In the next operative stage, the signature is con veyed to the sewing point C and assembled with the signatures already attached and is then pressed against the last preceding signature.

The necessary looping of the backing strip is effected in timed relation to the above operation. The looping operation is diagrammatically represented in Figs. 6 and 7 and has hitherto been effected, on the sewing of the book being completed, by manually operating a lever 38 (Figs. 6 and '7) which depressed a bar 51, disposed transversely over the machine, thus looping the backing strip after the necessary length of the latter had been drawn across the folds of the assembled signatures in known manner. In the mechanically operated apparatus this operation is controlled by a continuously revolving cam 28 mounted on the shaft 42 acting on the bell-crank lever 25, 25' which is pivotally mounted on a stub shaft 45 and connected to the looping device by means of a connecting lever 3'7. The lever 25 is provided with a nose (Figs. 1 and 5) by means of which it bears against the periphery of a disc 44, which isprovided with a recess (more fully described later) and is ri idly mounted on the shaft 16. The stub shaft also carries a second two-armed lever 24, 24, having a nose 23 adapted to engage corresponding notches in a disc 21 the latter also being mounted on the shaft 16. The automatic 1 actuation of both the adhesive applying and looping operations is controlled by the shaft 16, which turns in a periodic manner, the periods of rotation being adjustable, as hereinafter described.

The shaft 42 is a one-revolution shaft, i. e. it makes one complete revolution for each stitching operation and turns regularly when the machine is working. The shaft 42 carries the cam 28 which controls the rocking movement of the disc '7, and also the means by which the member 7 can be set in rotation. As can be seen in Fig.

1, this is effected in the example shown through bevel gearing and a chain drive, but any other convenient means may be employed.

The shaft 16 on which is mounted the adjustable timing means to control the mechanisms intended to act at definite periods, is connected with the continuously running shaft 42 by pawl mechanism 33 which advances the shaft 16 by one tooth of a ratchet wheel 29, also keyed to the shaft 16, after each sewing operation. The discs 21 and 44 (Fig. 4) are secured on the shaft 16 as mentioned, and one of them (21) is provided with two notches 22, 22' on its circumference, whilst the other (44) has a notch 36 also positioned on its circumference. The two-armed lever 24, 24 is positioned below the disc 21 and the two-armed lever 25, 25' below the disc 44. Both levers turn easily on the shaft 45 and are controlled by a common cam 28 or by two inde pendent eccentrics mounted on the shaft 42.

A pin 27 is provided in the connecting rod 11 to engage the two-arm lever 24, 24 and thus cause the latter to actuate automatically the adhesive applying device when engaged in one of the notches in the disc 21.

The actuating and controlling mechanism is constructed as follows: In addition to the fixed ratchet wheel 29 and the two fixed notched discs 21 and 44, the shaft 16 alsocarries a loosely mounted division plate 18 having a series of notches around its circumference. This plate is provided with a lateral projection or stop 49 (Fig. 3) by means of which it bears, when in the one extreme position, against a stop mounted on the frame 46 (Fig. 4) so that it cannot turn further towards the left and a second lateral stop 31. An adjustable stop or striking lever 17 is rotatably mounted on the shaft 16 adjacent the plate 18 and is adapted to engage, by means of a spring plunger pin 17, in any of the gaps in the division plate 18. The member 17 has a face 47 against which a projection 30, provided on the ratchet wheel 29, is adapted to bear when positioned in the right-hand neutral position immediately before permitting the mechanism to actuate. A pawl 32 prevents the ratchet wheel from slipping back on the retreat of the actuating pawl 33 and is pivotally mounted on the frame 46. The frame also carries a tripping member 34 which, during the operative movement of the pawl 33 which always slightly exceeds the travel necessary to advance the ratchet wheel by one tooth or division, lifts the pawl 33 out of engagement with the teeth of the wheel 29 so that, when the safety pawl 32 is also lifted, the whole mechanism can turn back under the pull of a spring 40. The pawl 32 is lifted by means of an extension 31' provided on the stop 31 of the division plate 18 and adapted to engage the underside of the pawl. When the pawls 32, 33 controlling the ratchet wheel 29 are tripped out of engagement, the shaft 16 is turned back by means of the spring 40 and a chain 39, until the stop 30 on the ratchet wheel 29 encounters the face 47 of the lever 17 which latter is adjustable in accordance with the number of book sections.

This mechanism acts in the following manner: If, for example, a book is to be assembled with 25 signatures the pin of the striking lever 17 is set on the appropriate notch of the division plate 18 which is graduated around the circumference with any desired number of notches.

Consequently the stop 47 also is now set in a definite position. For each revolution of the shaft 42 the ratchet Wheel 29 with its lateral stop 30, is advanced by one tooth, until the said stop 30 encounters the stop 31 on the division plate 18, hitherto stationary, and bearing firmly against the stop 50 on the frame by means of its stop 49. During the next advancement of the ratchet Wheel the disc 18 is also carried round. In this manner and in due course the extension 31' is carried under the holding pawl .32 and lifts'the latter out of engagement with the ratchet wheel 29 (Fig. 5). Thus, when the pawl 33v is again retracted, the latter runs up over the fixed tripping member 34 in the usual manner, is lifted from the teeth, and the spring 40 draws back the timing discs 21 and 44 and the ratchet wheel 29 until the stop 30 once more strikes against the stop 47 and thereby also drives back the division plate 18 for the distance separating the stops 49, 50 at the last stroke.

The whole operation of the timing and actuating mechanism is as follows: In commencing to handle a book the mechanism is in such a position that the first notch 22 of the disc 21 is out of action and the notch 22 positioned so as to advance and register with the nose 23 when the first signature is stitched (Fig. 5). When the notches are so positioned, the stop 30, carried by the ratchet wheel, abuts the stop 31 mounted on the division plate 18 so that the next advance of the ratchet wheel 29 will carry the extension 31 under the pawl 32 and so lift the latter out of engagementwith the ratchet wheel. If necessary this adjustment can be made by adjusting the shaft 16 by means of a handwheel (not shown). The first book signature 3a is placed, by hand, on the saddle 3, conveyed to the stitching operation C (Fig. 2) and stitched, the lug 23 of the lever 24 then engaging the notch 22 by reason of the advancement of the mechanism carried by the shaft 16, through the pawl 33. The adhesive applying apparatus then comes into operation and the second'section 20:, which has been placed on the saddle 2 at A and, in the meantime has reached the position B, is supplied with adhesive and then conveyed to the stitching position 0 where it is attached by means of the adhesive to the first stitched section. The ratchet wheel. 29 being ad-' vanced by one tooth during the stitching of the first signature, the stop 30 carried by the ratchet wheel and abutting the stop 31- on the division plate 18, carries the latter forward and so causes the extension 31 to trip the pawl 32. By reason of the pawl 33 also being lifted by the tripping member 34 out of the teeth during the retreat of the lever 19, the shaft 16 and the timing members mounted thereon are, at this instance, locked against rotation merely by the engagement of the nose 23 in the notch 22. When the latter member is withdrawn from the notch by the rota-- tion of the cam 28, the shaft 16 is released and turned back again by the action of the spring 40 until the stops 30 and 47 come. into mutual contact and thus carry the division plate 18 round until its stop 49 again meets the stop 50,0n thev frame. In this manner the discs 21 and 44 are again in the position shown in Fig. 3 so that,'during the feed of the intermediate signatures forn w ing part of the book, the timing discs are stepped round as described until the last signatureis laid on the saddle at A. At this point the notches 22, 36, 22' have been so stepped round that the notch 22 is about to engage the nose 23 and, when the last signature is advanced to the position B the nose 23 engages in the slot 22 and so allows the adhesive-applying roller 13 to press against the signature positioned at B. During the nextturn of the spider to assemble the last signature with the remainder of the book the first section of the next book having been placed in position at A is now advanced to B and the slot 36 of the disc 44 registers with the nose 3-5 of the lever 25. The looping mechanism is thus actuated and the bands of gauze, drawn out in the meantime, are looped as above described (Figs. 6 and '1) At the next step of the spider, by the engagement of the nose 23 in the slot 22,adhesive is applied to the second signature of the second book, now positioned at B, whilst the first section is stitched at C and the series of operations so resumed. The treadle lever 10 serves to actuate the adhesive applying device as desired out of time (for instance when, in exceptional cases, all the signatures are to be glued together). The connecting rod 11 by which the adhesive applying roller is actuated is lifted by the arm 24, 24' when the latter engages the pin 27 as described.

It will now be appreciated that by adjusting the position of the stop 47, the number of steps between the actuations of adhesive-applying and looping mechanism can be readily varied relatively to the number of signatures comprising the books to be handled.

The two notched discs 21 and 44 could, if desired, be combined together and other forms of known mechanism, controlled in the same manner, could also be provided for timing the operations.

It will be understood that the specific references applied to the spider member and signatures in the above description are for the purpose of description only, and that the saddles may be fed i in any order of rotation in the usual manner. We claim: 1. In a book-binding machine having a mechanical adhesive-applying device, timing mechanism to control the said device comprising a drive shaft, an auxiliary shaft, a timing disc mounted on the said auxiliary shaft, means actuated from the drive shaft for rotating the disc step by step, means for limiting the travel of the 'disc, means for restoring the said disc to the starting position, and means, driven from the'drive shaft and controlled from the said disc for actuating the said adhesive-applying device.

2. Ina book-binding machine having means for applying a backing strip to the assembled signatures and a device for looping the said strip, timing mechanism to control the said device comprising a drive shaft, an auxiliary shaft, a tim ing disc mounted on the said auxiliary'shaft, means actuated from the drive shaft for rotating the disc step by step, means for limiting the travel of the disc, meansfor restoring the said disc to the starting position, and means, driven from the drive shaft and controlled from the said disc for actuating the said device for looping the backing strip.

3. In a'book binding machine having at least one movable signature-carrier, a signature securing device'comprising mechanical means for straightening a signature laid upon the said a signature carried by the carrier, a drive shaft, and means actuated from the drive shaft to rotate the said disc.

5. In a book-binding machine having at least one rotary signature carrier, means for straightening and securing a signature upon the said carrier, comprising a spring clip suitably positioned on each carrier, a pivotally mounted bracket, a friction disc mounted in the said bracket, a drive shaft, a pivotal arm, means carried by the shaft to rock the said arm, means for connecting the said arm to the said bracket, and means for rotating the said disc from the said shaft for the purpose set forth.

6. In a book-binding machine having rotary carrier arms and a mechanical adhesive-applying device, means for actuating the said device at predetermined intervals, comprising a drive shaft, a cam mounted on the drive shaft, a pivotally mounted bell crank lever, means for connecting the said lever with the adhesive-applying device, means for engaging the said lever with the said cam, and automatic timing means to control the movement of the said bell crank lever.

'7. In a book-binding machine having a mechanical adhesive-applying device, means for actuating the said device at predetermined intervals, comprising a drive shaft, a cam mounted on the said drive shaft, a two armed pivotal lever having one arm engaged by the said cam, means for connecting the second arm of the said lever to the adhesive-applying device, a locking lug carried by the said second arm, an auxiliary shaft, a notched timing disc carried by the said auxiliary shaft, means for positioning the said disc in a definite initial position, means actuated from the drive shaft for stepping the disc round to register the releasing notches carried thereon with the said locking lug, means for returning the disc to its initial position, a holding pawl, means for tripping the said pawl to permit the return of the disc to the initial position, and adjustable means for timing the said tripping operation for the purpose set forth.

8. In a book-binding machine, means for applying adhesive to a book signature, comprising a source of adhesive supply, a freely rotatable roller, means for contacting said roller with the adhesive supp Y and for subsequently contacting said roller u with the said signature, and means for mechanically controlling the movement of the said roller.

9. In a book-binding machine, means for applying adhesive to a book signature, comprising an adhesive-supply member, an adhesive-applying roller adapted to rock about a pivot closely adjacent the adhesive-supply member, means for contacting the said adhesive-applying member successively with the adhesive-supply member and the said book signature, and means for conveying subsequently the said book signature to a book assembling position.

10. In a book-binding machine, means for assembling book signatures, comprising a multiple rotary arm sheet carrier, an adhesive-supply device, adjacent the path of travel of said sheet rotary arm sheet carrier, an adhesive supply roller adjacent the path of travel of said sheet carrier, a freely rotatable adhesive-applying roller, arms supporting said roller and rotatably mounted on a fixed pivot adjacent said adhesive supply roller, and means for rocking said arms to contact the said adhesive-applying roller consecutively with the said adhesive supply roller and a book signature supported by said sheet-carrier.

12, An adhesive-applying arrangement for a bo0k-bindin machine, comprising an adhesive supply roller, a pendulous adhesive-applying roller, and means for contacting said adhesiveapplying roller in turn with the supply roller and a signature while the latter is at rest in the machine.

13. A book-binding machine, comprising radial carrier arms adapted to move in turn to a bookassembling station, an adhesive-applying member adjacent the path of travel of said carrier arms, conveying saddles mounted on said carrier arms, means for automatically registering in a predetermined position a signature placed upon any one of said conveying saddles, and means for contacting said adhesive-applying member with each one of a selected number of the said signatures before the latter are conveyed to the assembling station.

14. A book-binding machine, comprising radial carrier arms adapted to move in turn to a bookassembling station, conveying saddles mounted on said carrier arms, a pendulous adhesive-applying roller intermediate the path of travel of said conveying saddles, an adhesive supply device associated with said adhesive-applying roller, means for automatically registering in a predetermined position a signature placed on any one of said saddles, means for actuating the said adhesive-applying roller, and means for contacting said adhesive-applying roller with each one of a selected number of the said signatures.

15. A book-binding machine, comprising radial carrier arms adapted to move in turn to a bookassembling station, a conveying saddle mounted on each carrier arm, an adhesive-applying member intermediate the path of travel of said conveying saddles, an adhesive-supply device associated with said adhesive-applying member, a registering device adapted to contact with a signature placed upon any one of the said conveying saddles, means for contacting said adhesiveapplying member with a signature placed upon one of-said saddles, and means for timing the operation of the said adhesive-applying member.

' 16'. A book-binding machine, comprising radial carrier arms adapted to move in turn to a bookassembling station, conveying saddles mounted on said carrier arms, a signature-registering device, means for actuating said signature-registering device, an adhesive-applying member positioned intermediate the path of travel of said conveying saddle, an adhesive supply device associated with said adhesive-applying device, means for contacting said adhesive-applying member with a signature placed upon one of said conveying saddles, and means for timing the operation of said adhesive-applying member.

17. A book-binding machine, comprising radial carrier arms, conveying saddles mounted on said carrier arms; means for registering in a predetermined position a signature placed upon any one of said conveying saddles, means for actuating said registering means, means for timing the contact of said registering means with a signature positioned on said saddles, an adhesiveapplying member, and means for contacting said adhesive-applying member with each of a selected number of the said signatures.

18. A book-binding -machine, comprising in combination at least one radial carrier arm adapted to move to a book assembling station, a conveying saddle mounted on each carrier arm, an adhesive-applyingmember positioned intermediate the path of travel of the said carrier arms,

an-adhesive-supply device associated with said adhesive-applying device, means for contacting said adhesive applying member with the'signatures placed upon the said conveying saddles, means for selectively controlling the contact of said adhesive-applying member with said signature, and means for looping a backing strip applied to said signatures.

19. A book-bindingmachine, comprising in combination at least one radial carrier arm adapted to'move to a book assembling station, a conveying saddle mounted on each said carrier arm, an automatic sheet registering device adapted to engage a signature mounted on any one of said conveying saddles, an adhesive-applying member positioned intermediate the path of travel of the said signatures, an adhesivesupply device associated with said adhesive-applying member, means for contacting the said adhesive-applying-member with the signatures placed upon the said conveying saddles, means for timing the contact of the said adhesive-applying means With the said signatures, and means for automatically selecting the signatures to be supplied with adhesive.

as. A book-binding machine, comprising in combination at least one radial carrier-arm adapted to move to a book assembling station, a conveying saddle mounted on each said carrier arm, an adhesive-applying member positioned intermediate the path of travel of the said carrier arms, an adhesive-supply member associated with said adhesive-applying member, means for contacting said adhesive-applying member with a signature placed upon any one of the said conveying saddles, means for looping a backing strip subsequently applied to the back of the said signature, and a timing device to control automatically the actuation of the looping means.

21. A book-binding machine, comprising in combination at least one radial carrier arm adapted to move to a book assembling station, a conveying saddle mounted on each said carrier arm, an automatic clip positioned on each conveying saddle, a registering device adapted to engage and register with said clip a signature placed on any one of said saddles, means for timing the actuation of said registering device, means for applying adhesive to the folded edge of a selected signature, means for timing the application of adhesive to the said signature, and means for selecting the signature to be so dealt with.

22. A book-binding machine, comprising in combination at least one radial carrier arm 1 adapted to move to a book assembling station, a

conveying saddle mounted on each said carrier arm, an automatic signature clip mounted on each conveying saddle, means for mechanically registering with one of said clips a signature placed upon the corresponding conveying saddle,

means for looping a backing strip applied to the said signature, means for actuating mechanically the said looping means, and a timing device adapted to control the actuation of the said looping means.

' 23.'A book-binding machine, comprising in combination at least one radial carrier arm adapted to move to a book assembling station, a conveying saddle mounted on each carrier arm,

an automatic signature clip attached to each conveying saddle, means for mechanically registering with one of said clips a signature placed-on the corresponding conveying saddle, means -for timing the actuation of said registering device, an adhesive-applying member positioned intermediate the path of travel of the said conveying saddles, an adhesive-supply device associated with said-adhesive-applying member, means for con- 'tacting said adhesive-applying device with the folded edge of a signature carried by one of said conveying saddles, means for timing the actuation of said adhesive-applying member, means for selectively controiling the application of the said adhesive, means for mechanically looping a backing strip subsequently applied to said signature, means for actuating mechanically the said looping means, and a timing device to control the actuation of the said looping means.

24. A book-binding machine, comprising in combination at least one movable carrier arm, a stitching saddle mounted on each carrier arm, a signature securing device mounted on each saddle, signature straightening mechanism adapted to be operatively associated in turn with each securing device, an adhesive-applying member mounted adjacent the path of travel of said carrier arm, an adhesive supply mounted adjacent the said adhesive-applying member, means for contacting the said adhesive-applying member with a signature adjacent the fold thereof, automatic means for actuating the said contacting means in timed relation to the operation of the machine, adjustable means for controlling automatically the actuating mechanism in accordance with the number of signatures constituting a book, mechanism for looping a backing strip relative to the assembled signatures, mechanism for actuating the said looping mechanism in timed relation to the operation of the machine, and associated with said adjustable timing means for automatically controlling, in accordance with the number of signatures constituting a book, the actuation of the said looping mechanism.

25. Means for assembling book signatures in a book-binding machine, which include a rotary, multiple arm signature carrier adapted to perform a step-by-step rotation, means for mechanically registering in a predetermined position signatures laid upon the arms of said carrier, an adhesive-applying member, and means for operating said adhesive-applying member to apply adhesive to a selected number of said signatures prior to the movement or" the latter to the assembling station.

26. In a book-binding machine, in combination, a rotary signature carrier adapted to receive a signature placed straddlewise thereon and convey the latter from the feeding station to an assembling station, and means for applying adhesive to the signature subsequent to its displacement from said feeding station and prior to its arrival at said assembling station.

27. In a book-binding machine, in combination, a rotary, multiple arm signature carrier, each arm of which is adapted to receive a signature placed straddlewise thereon and convey the latter from the feeding station to an assembling station, and means for applying adhesive to the signature subsequent to its displacement from said feeding station and prior to its arrival at said assembling station.

28. In a book-binding machine, in combination, a rotary, multiple arm signature carrier, each arm of which is adapted to receive a signature placed straddlewise thereon and convey the latter in a step-by-step movement from the feeding station to an assembling station, and means for applying adhesive to the signature during a period of rest in its step-by-step movement.

29. In a book-binding machine, in combination, a signature carrier adapted to receive a signature placed straddlewise thereon and convey the latter in a stepby-step movement from the feeding station to an assembling station, an adhesive-applying device, and means for operating said adhesive-applying device to apply adhesive to the signature during a period of rest in its step-by-step movement.

30. In a book-binding machine, in combination, a rotary signature carrier adapted to receive a signature placed straddlewise thereon and convey the latter from the feeding station to an as, sembling station, a pendulous adhesive applying member adapted to be moved into the path of travel of the signature, and means for operating said adhesive-applying member to apply adhesive to the signature subsequent to its displacement from said feeding station and prior to its arrival at said assembling station.

31. In a book-binding machine, in combination, a rotary, multiple arm signature carrier, each arm of which is adapted to receive a signature placed straddlewise thereon and convey the latter from the feeding station to an assembling station in a step-by-step movement, a pendulous adhesive-applying member adapted tobe moved into'the path of travel of the signature, and means for operating said adhesive-applying member to apply adhesive to said signature during a period of rest in the said step-by-step movement.

OSCAR KLEINSCHMIT. WALTER GEISSLER. KARL MULLER. 

